Display Selector
Engine Panel

Illuminated –

When the thrust reverser is commanded to stow and extinguishes
10 seconds later when the isolation valve closes.

Any time the REVERSER light illuminates for more than
approximately 12 seconds, a malfunction has occurred and the
MASTER CAUTION and ENG system annunciator lights illuminate.

One or more of following has occurred:

  • Isolation valve or thrust reverser control valve is not in the
    commanded position.

  • One or more thrust reverser sleeves are not in the
    commanded state.

  • The auto–restow circuit has been activated.

  • A failure has been detected in the synchronization shaft
    lock circuitry.